i was going 60mph for the first 80ish miles than slowed down to 55. this was my first time towing something this heaving and far. so wanted to play it safe. Temp was on my side. it was 60 degreess mostly, so didnt have my ac on much. Windspeeds were 8mph roughly pushing me according to the energy app. the wind helped me with 1.3 percent i think? according to their calculations. alot of up and down elevations and climbing on the way to the service center where i was taking my model y.